... ,weld tube and so on large objects.[Sort of steel packing strips]:(1) White steel packing strips(2) Blue steel packing strips( ... 3) Paintbaked steel packing strips(black,green,gray, ... 90Kg/mm2(780-900Mpa),elongation3%-5%.(3)High quality steel strips:high high intesity,good capability,bearing impact.tensile strength: ...